public class Main {
    public static void main(String[] args) {
        Integer a = 127;
        Integer b = 127;
        System.out.println(a == b);//true

        Integer c = 128;
        Integer d = 128;
        System.out.println(c == d);//false

        Integer e = 126;
        System.out.println(a == e);//false
    }
}
